CN204266945U - A kind of drilling tool stabilizer with righting structure - Google Patents
A kind of drilling tool stabilizer with righting structure Download PDFInfo
- Publication number
- CN204266945U CN204266945U CN201420707566.3U CN201420707566U CN204266945U CN 204266945 U CN204266945 U CN 204266945U CN 201420707566 U CN201420707566 U CN 201420707566U CN 204266945 U CN204266945 U CN 204266945U
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- China
- Prior art keywords
- stabilizer
- wiper block
- drilling tool
- righting structure
- righting
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Abstract
The utility model discloses a kind of drilling tool stabilizer with righting structure, relate to the downhole tool of oil, gas drilling engineering, comprise the syndeton at stabilizer body and two ends thereof, stabilizer body outer surface is provided with righting structure, described righting structure by several independently wiper block form, described wiper block stabilizer body circumferentially with axis direction on discontinuously arranged.The utility model can improve DRILL-STRING SYSTEM job stability, reduces the drilling tool stabilizer of drilling tool bit freezing risk.
Description
Technical field
The utility model relates to the downhole tool of oil, gas drilling engineering, is specifically related to a kind of drilling tool---drilling tool stabilizer.
Background technology
In oil, gas drilling engineering, the total length of DRILL-STRING SYSTEM usually can reach thousands of rice and even go up myriametre, in drilling process DRILL-STRING SYSTEM to be subject to stretching, compression, reverse and and the borehole wall between the load effect such as contact friction force, and make the phenomenons such as bending deformation often occurs DRILL-STRING SYSTEM, drill string eccentric wear even resonates, often cause well track deviation theory planned course, the generation of even drilling tool fracture etc.
For constraint, control the lateral displacement of DRILL-STRING SYSTEM in rotary drilling process, connect one or more drilling tool stabilizer in be often everlasting some position of DRILL-STRING SYSTEM of hole assembly design, to play stable DRILL-STRING SYSTEM, control the effect of well track trend.Conventional drilling tool stabilizer is according to the difference of specific constructive form, and be divided into replaceable sleeve stabilizer, one-piece auger stabilizer and overall straightedge stabilizer etc., its main functional structure---" righting structure " is screw type or linear rib list structure.
The contact area had between the drilling tool stabilizer of rib shape righting structure and the borehole wall is large, the frictional resistance particularly produced in the complex structural well drilling process such as extended reach well, high-inclination directional well, horizontal well is high, reduce drill bit drilling well torque responsive and drilling well capacity usage ratio, and easily occur the serious lock of tool drilling such as well wall dropping block bit freezing, necking down bit freezing.
Utility model content
The purpose of this utility model is to overcome above-mentioned deficiency, provides one can improve DRILL-STRING SYSTEM job stability, reduces the drilling tool stabilizer of drilling tool bit freezing risk.
The purpose of this utility model is realized by following technical proposals:
A kind of drilling tool stabilizer with righting structure, comprise the syndeton at stabilizer body and two ends thereof, stabilizer body outer surface is provided with righting structure, described righting structure by several independently wiper block form, described wiper block stabilizer body circumferentially with axis direction on discontinuously arranged.
In such scheme, when arbitrary wiper block does not circumferentially contact with adjacent wiper block at stabilizer body, this is circumferentially discontinuous; In like manner, adjacent two wiper blocks do not contact in the axial direction, and this is discontinuous on axial direction.
As selection, described each wiper block misplaces layout on described stabilizer body axis direction.
In such scheme, " dislocation is arranged " can reduce the contact area between stabilizer body and the borehole wall on the one hand and effectively reduce frictional resistance; The special flow passage structure formed on the other hand is more conducive to preventing the generation of the lock of tool drilling caused because of reasons such as well wall dropping blocks.
As selection, described wiper block is screw arrangement on described stabilizer body.As further selection, the screw arrangement of described wiper block in multi-head spiral wire on described stabilizer body.
In such scheme, described " screw arrangement " refers to that wiper block take helix as bus, stabilizer body outer surface is arranged in order, described " helix " can be that left-handed twist also can for right-hand helix, and described " helix " can be single thread line, bipitch helical line, also can be multi-head spiral line.Wiper block is that uncontinuous spiral shape is arranged in order, on the one hand effectively can reduce drilling tool stabilizer Yu frictional resistance between Bowl wall, on the other hand by the composition density of righting structure of rationally arranging, can increase or reduce the flow passage structure of drilling tool stabilizer flexibly, reduce the occurrence probability of mud drum and lock of tool drilling.
As selection, the cross section of described wiper block is circular.
As selection, the cross-sectional profiles line of described wiper block is connected and composed by least three line segments, and each line segment is straightway or curved section separately.As further selection, the cross section of described wiper block is irregular polygon.
In such scheme, listed by there is the drilling tool stabilizer of the linear formula of the wiper block such as circle, polygon cross-sectional profiles, with borehole wall contact friction slipping in be acute angle or sharp edge contact (as shown in Figure 9), also change into " plow contact " by the straight line of conventional stupefied strip wiper block or " scraping cut-grafting to touch " of deep camber smooth curve, enhance the gauge ability of drilling tool stabilizer.
As selection, described wiper block is fixed with initiatively cutting teeth or passive resistance to roll flute, or initiatively cutting teeth and passive resistance to roll flute combine.
In such scheme, so-called " initiatively cutting teeth " is defined as the fixed form of cutting teeth on wiper block for " angle is larger folded by the normal direction line of cutting teeth work plane and the stabilizer radial line of cutting teeth position point ", generally this angle is not less than 60 °, in this kind of situation, cutting teeth can be scraped cut the borehole wall with negative rake wedging, reaches the effect of active gage; So-called " passive resistance to roll flute " is defined as the fixed form of cutting teeth on wiper block for " angle is less folded by the normal direction line of cutting teeth work plane and the stabilizer radial line of cutting teeth position point ", this angle is generally less than 10 °, in this kind of situation, cutting teeth only with friction and Extrusion mode gauge, can be referred to as passive gauge.
As selection, described active cutting teeth and/or passive resistance to roll flute be selected from PDC tooth, hard-metal insert, impregnated with diamond composite teeth one or more.
The main scheme of aforementioned the utility model and each further selection scheme thereof can independent assortment to form multiple scheme, be the utility model and can adopt and claimed scheme.
The beneficial effects of the utility model:
1. the righting structure that the discontinuous wiper block in this patent is formed, decrease and contact frictional resistance between the borehole wall, adopt " plow " mode to scrape simultaneously and cut the borehole wall, make it have stronger active gage cutting power, effectively can reduce the generation of drilling tool stabilizer because of accidents such as frictional resistance bit freezing or borehole wall necking down bit freezings, improve drilling safety.
2. the righting structure that discontinuously arranged wiper block is formed, improve the external surface runner distribution form of drilling tool stabilizer, runner gap is little, and drilling fluid flow velocity sharply, can alleviate the adverse effect that the problems such as stabilizer runner mud drum, trouble of lost tool in hole, well wall dropping block cause normal drilling operability.
Accompanying drawing explanation
Fig. 1 is the stereogram of this patent first embodiment.
Fig. 2 is wiper block cross sectional representation in this patent first embodiment.
Fig. 3 is righting structure circumferentially deploying figure in this patent first embodiment.
Fig. 4 is the wiper block end face structure schematic diagram of this patent second embodiment.
Fig. 5 is wiper block cross sectional representation in this patent the 3rd embodiment.
Fig. 6 is the wiper block end face structure schematic diagram of this patent the 3rd embodiment.
Fig. 7 is wiper block cross sectional representation in this patent the 4th embodiment.
Fig. 8 is the wiper block end face structure schematic diagram of this patent the 4th embodiment.
Wiper block described in Fig. 9 this patent and the borehole wall " plow contacts " schematic diagram.
In above-mentioned figure, wherein: 1, stabilizer body, 11, external thread structure, 12, female thread structure, 2, wiper block, 21, passive resistance to roll flute, 22, initiatively cutting teeth, 23, wiper block cross-sectional profiles line,
Detailed description of the invention
Below in conjunction with specific embodiments and the drawings, the utility model is further described.
Embodiment 1:
As shown in Figure 1, 2, 3, a kind of drilling tool stabilizer with righting structure, comprise stabilizer body 1, the syndeton of female thread structure 12 and external thread structure 11 is respectively arranged with at the two ends of stabilizer body 1, the external surface of stabilizer body 1 is provided with righting structure, righting structure by several independently wiper block 2 form, and wiper block 2 stabilizer body 1 circumferentially with axis direction on discontinuously arranged.As selection, each wiper block 2 misplaces layout on stabilizer body 1 axis direction.Further, wiper block 2 screw arrangement on stabilizer body 1.As shown in this embodiment, wiper block 2 is uniformly distributed at stabilizer body 1 circumferencial direction and is interspersed with axis direction, forms the screw arrangement of wiper block 2 in multi-head spiral wire on stabilizer body 1.Wiper block 2 can also be selected be fixed with some passive resistance to roll flutes 21 further, the passive resistance to roll flute 21 that wiper block 2 is arranged is PDC tooth or impregnated with diamond tooth or hard-metal insert.Wherein, as selection, the outline line 31 of the cross section 3 of wiper block 2 is circular.As shown in Figure 9, the discontinuous independent righting structure of this patent is compared with the stupefied strip righting structure of prior art continuous print, wiper block can adopt " plow " mode to scrape and cut the borehole wall, and what can make drilling tool stabilizer has better to scrape and cut effect, and gauge ability can further improve.Fig. 9 (left side) has the wiper block of circular cross section and " plow contacts " schematic diagram between the borehole wall for this patent.
Embodiment 2:
As shown in Figure 4, the present embodiment is substantially the same manner as Example 1, and difference is: the work direction of rotation side of described wiper block 2 when stabilizer body 1 works, is also fixed with some active cutting teeths 22.The active cutting teeth 22 that wiper block 2 is arranged and (or) passive resistance to roll flute 21 are PDC tooth or impregnated with diamond tooth or hard-metal insert.
Embodiment 3:
As shown in Figure 5, Figure 6, the present embodiment is substantially the same manner as Example 2, and its difference is: the cross-sectional profiles line of wiper block 2 is connected and composed by least three line segments, and each line segment is straightway or curved section separately.As selection, the cross-sectional profiles line 23 of described wiper block 2 is formed for being joined end to end to connect by a circular curve and two straightways, and the tie point of these two straightways is positioned at work direction of rotation side when drilling tool stabilizer works.As shown in Figure 9, the discontinuous independent righting structure of this patent is compared with the stupefied strip righting structure of prior art continuous print, wiper block can adopt " plow " mode to scrape and cut the borehole wall, and what can make drilling tool stabilizer has better to scrape and cut effect, and gauge ability can further improve.Fig. 9 (right side) has the wiper block of polygonal crosssection and " plow contacts " schematic diagram between the borehole wall for this patent.
Embodiment 4:
As shown in Figure 7,8, the present embodiment is substantially the same manner as Example 3, and its difference is: the cross-sectional profiles line 23 of wiper block 2 is connect and compose with seven straightways of arc transition.Wherein, the present embodiment stabilizer body 1 works institute's angle α≤100 °, two limits of direction of rotation side.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (9)
1. one kind has the drilling tool stabilizer of righting structure, comprise the syndeton at stabilizer body and two ends thereof, stabilizer body outer surface is provided with righting structure, it is characterized in that: described righting structure by several independently wiper block form, described wiper block stabilizer body circumferentially with axis direction on discontinuously arranged.
2. there is the drilling tool stabilizer of righting structure as claimed in claim 1, it is characterized in that: described each wiper block misplaces layout on described stabilizer body axis direction.
3. there is the drilling tool stabilizer of righting structure as claimed in claim 1, it is characterized in that: described wiper block is screw arrangement on described stabilizer body.
4. there is the drilling tool stabilizer of righting structure as claimed in claim 3, it is characterized in that: the screw arrangement of described wiper block in multi-head spiral wire on described stabilizer body.
5. there is the drilling tool stabilizer of righting structure as claimed in claim 1, it is characterized in that: the cross-sectional profiles line of described wiper block is for circular.
6. have the drilling tool stabilizer of righting structure as claimed in claim 1, it is characterized in that: the cross-sectional profiles line of described wiper block is connected and composed by least three line segments, each line segment is straightway or curved section separately.
7. there is the drilling tool stabilizer of righting structure as claimed in claim 6, it is characterized in that: the cross-sectional profiles line of described wiper block is irregular polygon.
8. the drilling tool stabilizer with righting structure as described in claim arbitrary in claim 1 to 7, is characterized in that: described wiper block is provided with initiatively cutting teeth and/or passive resistance to roll flute.
9. there is the drilling tool stabilizer of righting structure as claimed in claim 8, it is characterized in that: the active cutting teeth that described wiper block is arranged and/or passive resistance to roll flute are PDC tooth or impregnated with diamond tooth or hard-metal insert.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420707566.3U CN204266945U (en) | 2014-11-21 | 2014-11-21 | A kind of drilling tool stabilizer with righting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420707566.3U CN204266945U (en) | 2014-11-21 | 2014-11-21 | A kind of drilling tool stabilizer with righting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204266945U true CN204266945U (en) | 2015-04-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420707566.3U Expired - Fee Related CN204266945U (en) | 2014-11-21 | 2014-11-21 | A kind of drilling tool stabilizer with righting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204266945U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105178872A (en) * | 2015-09-09 | 2015-12-23 | 长江大学 | Mechanical auxiliary device used for improving bit pressure |
| CN113123732A (en) * | 2019-12-31 | 2021-07-16 | 中国石油天然气集团有限公司 | Casing centralizer |
-
2014
- 2014-11-21 CN CN201420707566.3U patent/CN204266945U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105178872A (en) * | 2015-09-09 | 2015-12-23 | 长江大学 | Mechanical auxiliary device used for improving bit pressure |
| CN113123732A (en) * | 2019-12-31 | 2021-07-16 | 中国石油天然气集团有限公司 | Casing centralizer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150415 Termination date: 20201121 |